/* css rest */
body {
  margin: 0;
  padding: 0;
  background-color: #f3f5f7;
}

ul {
  list-style: none;
}

a {
  text-decoration: none;
}

div,
p,
ul,
li,
h1,
h2,
h3,
span,
a,
dl,
dt,
dd,
input {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
} 

.clearfix::before,
.clearfix::after {
  content: "";
  display: table;
}

.clearfix::after {
  clear: both;
}

.fl {
  float: left;
}

.fr {
  float: right;
}

.wrapper {
  width: 1200px;
  margin: 0 auto;
}

.header {
  height: 42px;
  margin: 30px auto;
}

.header .logo {
  width: 195px;
  height: 42px;
}

.header .nav {
  height: 42px;
  margin-left: 70px;
}

.nav li {
  float: left;
  margin-left: 20px;
}

.nav li:first-child {
  margin-left: 0;
}

.nav li a{
  display: block;
  height: 42px;
  padding: 0 9px;
  line-height: 42px;
  color: #050505;
  font-size: 18px;
}

.nav li a:hover {
  border-bottom: 2px solid #00a4ff;
}

.search {
  width: 412px;
  height: 40px;
  border: 1px solid #00a4ff;
  margin-left: 75px;
}

.search input {
  width: 360px;
  height: 38px;
  border: 0;
  padding: 0;
  padding-left: 20px;
  /* 选中高亮的线 */
  outline: none;
  font-size: 14px;
}

.search button {
  width: 50px;
  height: 38px;
  background-color: #00a4ff;
  background-image: url("../images/btn.png");
  background-repeat: no-repeat;
  border: 0;
  padding: 0;
}

.user {
  margin-right: 30px;
}
.user span{
  font-size: 14px;
  color:#666666;
  line-height: 42px;
}

.user img {
  vertical-align: middle;
  margin-right: 5px;
}

.banner {
  background-color: #1c036c;
}

.banner .wrapper {
  height: 420px;
  background: url("../images/banner2.png") no-repeat center center;
}

.banner .left {
  width: 190px;
  height: 420px;
  background-color: rgba(0, 0, 0, 0.3);
  padding: 12px 20px;
  line-height: 44px;
}

.banner .left a {
  display: block;
  color: #fff;
}

.banner .left a:hover {
  color: #00a4ff;
}

.banner .right {
  width: 228px;
  height: 300px;
  background-color: #fff;
  margin-top: 50px;
}

.banner .right .course {
  height: 48px;
  background-color: #9bceea;
  color: #fff;
  text-align: center;
  line-height: 48px;
}

.list-btn {
  padding: 0 18px;
}

.list-btn li {
  padding: 12px 0;
  border-bottom: 2px solid #e5e5e5;
}

.list-btn li h3{
  color: #4e4e4e;
  font-size: 16px;
}

.list-btn li h3 span{
  font-size: 14px;
}

.list-btn li p{
  font-size: 12px;
  color: #a5a5a5;
}

.list-btn .all-course {
  display: block;
  height: 40px;
  line-height: 40px;
  text-align: center;
  color: #00a4ff;
  border: 1px solid #00a4ff;
  margin-top: 5px;
}

.navbar {
  height: 60px;
  margin-top: 8px;
  margin-bottom: 35px;
  background-color: #fff;
  box-shadow: 0px 2px 3px 0px 
		rgba(118, 118, 118, 0.2);
}

.navbar .left li {
  line-height: 60px;
}

.navbar .left li a{
  padding: 0 30px;
  color:#050505; 
  font-size: 14px;
  border-left: 1px solid #bfbfbf;
}

.navbar .left li a:hover{
  color:#00a4ff; 
}

.navbar li:nth-child(1) a {
  border: 0;
}

.navbar .change {
  line-height: 60px;
  margin-right: 26px;
  color: #00a4ff;
  font-size: 14px;
}

.product .title {
  height: 20px;
  margin-bottom: 20px;
  color: #494949;
  font-size: 20px;
}

.product .title .right{
  color: #a5a5a5;
  font-size: 12px;
  line-height: 20px;
  margin-right: 30px;
}

.product .list li {
  float: left;
  width: 228px;
  height: 270px;
  background-color: #fff;
  margin-bottom: 15px;
  margin-right: 15px;
}

.product .list li .content{
  padding: 25px 20px 27px 24px;
}

.product .list li .content h3{ 
  font-size: 14px;
  color: #050505;
  font-weight: 400;
}

.product .list li .content div{
  color: #606060;
  font-size: 12px;
  margin-top: 20px;
 }

.product .list li .content span{ 
  color: #ff7c2d;
}

.product .list li:nth-child(5n) {
  margin-right: 0;
}

.product .list li img{
  width: 100%;
}

.footer {
  margin-top: 40px;
  background-color: #fff;
}

.footer .wrapper {
  height: 412px;
  padding: 30px 20px 0;
}

.footer .update {
  width: 425px;
}
.footer .update p{
  width: 425px;
  font-size: 12px;
  color: #666666;
  margin: 30px 0 15px 0;
}

.footer .update div {
  width: 120px;
	height: 36px;
  line-height: 36px;
  text-align: center;
  color: #00a4ff;
  font-size: 16px;
	border: solid 1px #00a4ff;
}

.teamwork {
  margin-left: 120px;
  font-size: 16px;
  color: #333;
}

.teamwork dt {
  margin-bottom: 15px;
}
.teamwork dl {
  font-size: 12px;
}